Home / 81,037.36-111,781.98-53,814.70

Finding the Fourth Proportional to 81,037.36, 111,781.98 and 53,814.70

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Solution

The fourth proportional to 81,037.36, 111,781.98 and 53,814.70 is: 74,231.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,037.36 : 111,781.98 = 53,814.70 : x
  2. Step 2: Convert to fraction form
    81,037.36/111,781.98 = 53,814.70/x
  3. Step 3: Cross multiply
    81,037.36x = 111,781.98 × 53,814.70
  4. Step 4: Simplify right side
    81,037.36x = 6,015,513,719.11
  5. Step 5: Solve for x
    x = 6,015,513,719.11/81,037.36
  6. Step 6: Final answer
    x = 74,231.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.